younger scholar; junior academic
Refers to a scholar who is younger or less experienced, often in contrast with 先学 (senior scholar). Somewhat formal and not an everyday word.
See also: 先学
Under the guidance of the senior scholars, the younger scholars advanced their research.
future reference; for one's own edification
Used in set phrases like 後学のために (for future reference / as a learning experience). Implies gaining knowledge or experience that will be useful later.
For future reference, please let me tour that factory once.
Even failures serve as lessons for the future.